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r <br /> Condor Earth Technologies, Inc. <br /> 21663 Br1.tn Lane, Sonora,CA 95370 (209) 532-0361 <br /> 188 Frank West Circle, suite 1,Stockton, CA 95206 (209) 234-0518 <br /> June 23, 2005 Condor Project No 1707 D <br /> SECOND QUARTER GROUNDWATER MONITORING REPORT <br /> AND TREATMENT SYSTEM STATUS UPDATE <br /> Site Address Canepa's Car Wash <br /> 6230 Pacific Avenue " u � <br /> Stockton, California <br /> 'U' z © zoos��,����HEALTH <br /> Client Mr Remo Canepa(Ghent) FNVIRQ <br /> 1536 N Hunter Street firVICES <br /> Stockton, California ISER <br /> RER <br /> Primary Agency Jeff Wong, San Joaquin County Environmental Health Department (SJCEHD) <br /> Copy to James Barton, California Regional Water Quality Control Board, Central Valley <br /> Region (CRWQCB) <br /> This is a report of the results of the second quarter 2005 groundwater monitoring event conducted April <br /> 13, 2005 at the above-referenced site Figures indicating the site location, groundwater elevation contours, <br /> groundwater elevation fluctuations (hydrograph), benzene iso-concentration contours, methyl tertiary <br /> butyl ether (MTBE) iso-concentration contours, and historic MTBE concentrations in MW-3 are attached <br /> to this report (Attachment A, Figures 1 through 6, respectively) Site background information, historic <br /> groundwater monitoring data, SVE data analysis and calculations, field forms, and laboratory analytical <br /> results are provided in Attachments B, C, D, E, and F respectively This report has been submitted to the <br /> SJCEHD and the CRWQCB as indicated above <br /> In a letter dated February 4, 2003, Mr Jeff Wong of the SJCEHD approved Condor's proposal to reduce <br /> quarterly sampling of MW-5, MW-6, MW-7, and MW-10 to an annual basis, and the destruction of MW- <br /> 8 to accommodate site development Annual groundwater monitoring of wells MW-5, MW-6, MW-7, and <br /> MW-10 is currently conducted during the third quarter It is anticipated that a new monitoring well in the <br /> vicinity of MW-8 and an additional down-gradient well will be installed within the next year A summary <br /> of the results of the April 2005 groundwater monitoring event is provided in Table 1, on the following <br /> page <br /> I <br /> y <br /> �� CONDOR <br />